What do people mean by “you don’t see darkness, you see nothing” if you lose your eyeballs?

Question

I cannot fathom seeing nothing as opposed to just seeing pitch black. An example I was told is “it’s like trying to see out of your elbow”. I still do not get it

In: Biology

Answer 1

Covering one eye surg it still open causes you to see black. Closing that eye makes you see nothing/no signal.